APA (7th ed.) Citation

House of Books, Ltd. (New York, N.Y.), & Cohn, M. A. (1980). 50. House of Books, Ltd..

Chicago Style (17th ed.) Citation

House of Books, Ltd. (New York, N.Y.), and Marguerite Arnold Cohn. 50. New York: House of Books, Ltd., 1980.

MLA (9th ed.) Citation

House of Books, Ltd. (New York, N.Y.), and Marguerite Arnold Cohn. 50. House of Books, Ltd., 1980.

Warning: These citations may not always be 100% accurate.